#include <stdio.h>

int main()
{
	/*实验1(a)*/
	float fsum1 = 0.0;
	float fsum2 = 0.0;
	int n = 0;
	do
	{
		n++;
		fsum1 = fsum2;
		fsum2 = fsum2 + 1.0/n;
	} while(fsum1 != fsum2);
	return 0;
}
